package com.pennysaver.servlet;

import java.io.IOException;

import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

/**
 * Servlet implementation class PennysaverServlet
 */
@WebServlet("/PennysaverServlet")
public abstract class PennysaverServlet extends HttpServlet {

	private static final long serialVersionUID = 1L;

	/**
	 * @see HttpServlet#HttpServlet()
	 */
	public PennysaverServlet() {
		super();
	}

	/**
	 * @see HttpServlet#doGet(HttpServletRequest request, HttpServletResponse
	 *      response)
	 */
	protected void doGet(HttpServletRequest request,
			HttpServletResponse response) throws ServletException, IOException {
		doAction(request, response);
	}

	/**
	 * @see HttpServlet#doPost(HttpServletRequest request, HttpServletResponse
	 *      response)
	 */
	protected void doPost(HttpServletRequest request,
			HttpServletResponse response) throws ServletException, IOException {
		doAction(request, response);
	}

	protected void doAction(HttpServletRequest request,
			HttpServletResponse response) throws ServletException, IOException {
		if (validateInput(request, response)) {
			defaultMethod(request, response);
		}
	}

	protected abstract void defaultMethod(HttpServletRequest request,
			HttpServletResponse response) throws ServletException, IOException;

	protected abstract boolean validateInput(HttpServletRequest request,
			HttpServletResponse response) throws ServletException, IOException;
}
